Added geocode merger tool

builder/geocode/merger.cpp

@@ -0,0 +1,59 @@
+#include <fstream>
+#include <string>
+#include <set>
+#include <algorithm>
+#include <iostream>
+#include <sstream>
+
+using namespace std;
+
+struct GeoCoord
+{
+  int pageId;
+  double lat;
+  double lon;
+  bool operator<(GeoCoord const & other) const
+  {
+    return pageId < other.pageId;
+  }
+};
+
+typedef set<GeoCoord> GeoContainerT;
+
+void FileToContainer(ifstream & file, GeoContainerT & outVec)
+{
+  string line;
+  while (file.good())
+  {
+    getline(file, line);
+    istringstream stream(line);
+    GeoCoord c;
+    stream >> c.pageId >> c.lat >> c.lon;
+    if (c.lat < 90. && c.lat > -90. && c.lon < 180. && c.lon > -180.)
+      outVec.insert(c);
+  }
+}
+
+
+int main(int argc, char ** argv)
+{
+  if (argc < 3)
+  {
+    cout << "  Usage: " << argv[0] << " input_files..." << endl;
+    cout << "    Merges geocodes from files in tab delimeted format into stdout:" << endl;
+    cout << "    <page_id> <lat> <lon>" << endl;
+    cout << "    Note that first file has priority over others." << endl;
+    return 0;
+  }
+
+  GeoContainerT merged;
+  for (int i = 1; i < argc; ++i)
+  {
+    ifstream file(argv[i]);
+    FileToContainer(file, merged);
+  }
+
+  for (GeoContainerT::iterator it = merged.begin(); it != merged.end(); ++it)
+    cout << it->pageId << '\t' << it->lat << '\t' << it->lon << endl;
+  return 0;
+}